a took 45 minute to walk 15km. if B is 50% faster than A how much time he will take to cover the same distance
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Time taken by A is 45 min or 3/4 hr
Speed of A will be = 15 ÷ (3/4)
15 X 4/3 = 20 km/hr
B is 50% faster than A means B has speed of A + 1/2 speed of A
So we get,
20 + (1/2)20 = 20 + 10 = 30 km/hr
Speed of B = 30 km/hr
So to cover 15 km it will take B half hr or 30 mins
Speed of A will be = 15 ÷ (3/4)
15 X 4/3 = 20 km/hr
B is 50% faster than A means B has speed of A + 1/2 speed of A
So we get,
20 + (1/2)20 = 20 + 10 = 30 km/hr
Speed of B = 30 km/hr
So to cover 15 km it will take B half hr or 30 mins
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